package com.son.controller;

import com.son.domin.Student;
import com.son.factory.StudentFactory;
import com.son.service.InterStudenService;

import java.util.ArrayList;
import java.util.Scanner;

public class StudentControllerImpl implements InterStudentController {
private  Scanner sc=new Scanner(System.in);
    private InterStudenService studentService= StudentFactory.getStudentService();

    //入口：
    @Override
    public void start() {
        Loop:
        while (true) {
            System.out.println("--------欢迎来到 <学生> 管理系统--------");
            System.out.println("请输入您的选择: 1.添加学生  2.删除学生  3.修改学生  4.查看学生  5.退出");
            String choice = sc.next();
            switch (choice) {
                case "1":
                    //System.out.println("添加");
                    addStudent();
                    break;
                case "2":
                    //System.out.println("删除");
                    deleteStudent();
                    break;
                case "3":
                    //System.out.println("修改");
                    updateStudent();
                    break;
                case "4":
                    //System.out.println("查询");
                    findAllStudent();
                    break;
                case "5":
                    System.out.println("感谢您使用学生管理系统, 再见!");
                    break Loop;
                default:
                    System.out.println("您的输入有误, 请重新输入");
                    break;
            }
        }
    }
//添加学生
    @Override
    public void addStudent() {
        String sid = null;
        while (true) {
            System.out.println("请输入学号");
            sid =sc.next();
            //判断学号是否存在
            boolean exists = studentService.isExists(sid);
            if (exists) {
                System.out.println("学号已被占用");
            } else {
                break;
            }
        }
        Student stu = luruStudentInfo(sid);
        studentService.addStudent(stu);
        System.out.println("添加成功");
    }
//修改学生
    @Override
    public void updateStudent() {
        String sid = luruxuehao();
        Student stu = luruStudentInfo(sid);
        studentService.updateStudent(sid,stu);
        System.out.println("修改成功");
    }
//删除学生
    @Override
    public void deleteStudent() {
        String sid = luruxuehao();
        studentService.deleteStudent(sid);
        System.out.println("删除成功");
    }
//录入学生学号 删除和修改
    @Override
    public String luruxuehao() {
        System.out.println("请输入学号");
        String sid = null;
        while (true) {
            sid = sc.next();
            //判断学号是否存在
            boolean exists = studentService.isExists(sid);
            if (exists) {
                break;
            } else {
                System.out.println("已经存在，请重新输入");
            }
        }
        return sid;
    }
//查看学生
    @Override
    public void findAllStudent() {
        ArrayList<Student> stus = studentService.findAllStudent();
        if (stus == null) {
            System.out.println("没有数据，请先添加");
            return;
        }
        System.out.println("学号\t姓名\t年龄\t生日");
        for (int i = 0; i < stus.size(); i++) {
            Student stu = stus.get(i);
            if (stu != null) {
                System.out.println(stu.getSid() + stu.getName() + stu.getAge() + stu.getBirthday());
            }
        }
    }
//录入学生信息 添加和修改
    @Override
    public Student luruStudentInfo(String sid) {
        System.out.println("请输入姓名");
        String name = sc.next();
        System.out.println("请输入年龄");
        String age = sc.next();
        System.out.println("请输入生日");
        String birthday = sc.next();
        Student stu = new Student();
        stu.setSid(sid);
        stu.setName(name);
        stu.setAge(age);
        stu.setBirthday(birthday);
        return stu;
    }
    }

